This book proposes a wholly new view on digital competition. It proposes that – rather than just competing within or for a market – digital firms compete to capture their own part of the digital network industry, constituting their digital ecosystem. Once they control the network’s access points for competition, they become the de facto regulators of their ecosystems, allowing them to leverage their ecosystem power to capture new markets and expand their reach further across the digital network. Regulation that focuses on markets cannot capture these dimensions of power and competition. The system of progressive ecosystem regulation proposed in this book explains how ecosystem competition can be stimulated to create meaningful competitive pressures, open up the network to disruptive entry, and introduce real choice for users.